Window ventilator



Fig.

July 1, 193.0. F. A. BAILEY 1 769 484 WINDOW VENTILA'IOR Filed Sept. 12, 1929 Patented July 1, 1930 UNITED STATES ATENT OFFICE i FRED A. BAILEY, OF OMAHA, NEBRASKA WINDOW VENTILATOR Application filed September 12,1929. Serial No.-392,086.

This invention relates to a window ventilator, and has for its object to provide an elongated box adapted to be disposed between the lower sash and windowstool, said box being apertured to permit air to enter and being extensible so that it may have a length equal to to the width of the window sash.

air which enters will be deflected upwardly, and that a horizontal draft into the room will be avoided. Also the invention includes a pair of holder-lugs for the ends of the box which prevent displacement.

With the foregoing objects in View the invention presents anew and useful construction, combination and arrangement of parts as described herein and claimed, and as illustrated in the accompanying drawing, it being understood that changes may be made in size, proportion and minor details, said changes being within the scope of'the invention as claimed.

Inthe drawing, Fig. 1 is a side View of the device, showing the outer or Weather side thereof and Fig. 2 is a top plan view of the same.

Fig. 3 shows the device mounted in operative position, the window sash, stool and sill being in transverse section. Fig. 4 is an end view of one of the boxes of the ventilator. Fig. 5 is a view in transverse section through a ventilating-box. Fig. 6 is a plan view partly in section showing relative position of the ventilator when extended.

Referring now to the drawing for a more particular description, the invention is shown and described in connection with the lower sash 10 and stool 11 of a window, the window sill and parting strip being indicated respectively at 12 and 13.

In order that the objects maybe attained as first mentioned I provide boxes arranged in pairs, as the box 14 and second box 15, said boxes being hollow. and angular in cross-section and each providinga vertical part a and horizontal part 6 (Figs. 4, 5) when placed in operative position.

The boxes may be constructed of any suitable material, but sheet metal is preferred,

and in order that they may be collapsed or extended when used in pairs, the box 15 is somewhat'larger in cross-section so that the box 14 may have sliding movements in said box 15 to be adjusted longitudinally thereof.

The inner ends of the boxes are open and the outer end of each box is provided with a" holder-lug or projection 16, andwhen the device is placed in operative position its .ver- .5

tical part a may rest upon the window sill 12 with its horizontal part b resting on the window stool 11, its projections 16 engagingbetween the window stops 17 and parting strips 13.

The outer or vertical wall a of each box. A is provided with apertures 18 and their upper,

horizontal'walls b are provided with apertures 19, and as thus described the apertures,

18 will be disposedrclosely adjacent to the window sill 12 and exposed to the weather,

the apertures- 19 being disposed inwardly of and adjacent to the lower rail of the window sash within the building, the apertures 18 opcrating as intake-ports for air, and the air moving upwardly and discharged through the apertures 19.

It will thus be seen that while the; air may have a free movement into a room, any draft.

of air will be directed upwardly, and will not'move horizontally into a room,this obviously being a desired feature. v Also since the apartures 18, at the outside of a building,

are disposed in a, plane lower than the apertures 19, snow or ram will not enter.

In operation, the lower part of the window sash should engage'the top surface of the device but will not obstruct the apertures 19 too i r m m is 'necessary to provide meansjto prevent displacement ofthe device, and therefore the holder-lugs "16fare provided as mentioned.

s In operation, after the lower 'WlIlClOW sash 5 has been'raised the cleviceiis extended so that its holder-lugs 16-at its ends illbe. disposed between-the parting strips 13 and adjacent V window stops 17 ,the hori'zontal'parts b of the boxes r esting on the indow stool and the v Vertical parts athereof resting upon the Win- 1 dew-sill. The Window is theni lowered so that.

it Willengage'the top of the boxes adjacent to the apertures 19; y 7 v in Numeral 7 20 indicates a slot which is p 15 formed in the box 15' near its inner end in line With the aperturesl8, and at 21 is indisated-a slotywhichisformed in said box 15 near it s'inner iend, saidslot being in line with the, aperturesila lthese slots being for the 2 0 fpurposeoii per nitting a free movement of air Lthroiigh the ventilator'l and preventing any partofthe box 715 fronipbstr'ucting the aper-.

tufesof thebox l l; ,It) will be understood 1 ithati-the le'ngth of the Yentilator when ex i 25 tended will be'equalto thewidth oi the Win- I a I dowsash;andljwhenthe ventilator has been i adjustedor extendedsonie of the apertures *ofthe' boxyl lfnear its inner end, might be ob V struo'ted torYthe; reason that the apertures 3 yniightlnot be; disposed: in register with each otherl 'Byruse 0f theaslots mentioned there Will be no obstructions from the causes men- :tionedd l flI-olaim a's myiinventionfi x 1". In ajwindowventilator for buildings, a

hollow elongated "box angular in cross-sec i 'tion haying aligning apertures in its top and 1 i aligning'apert'ures in its side; a second hol-' lowielongated box formed- Withjaligning mifapertures-inits top andzaligning apertures in its side and adapted to have [sliding move ments in the first'nainedbox, the top and side of said first named boxrhaving slots formed V therein'iin alignment with its apertures; i 5; 2. Ina-window ventilator for buildings, a

hollow elongated box angular in cross section having aligning apertures in its top, align ingf aperturesin its side uand a holclenlug projecting beyond its end,-;a*second hollow elongated boxihaving aligning apertures in itstop; aligning -'apertures in its side and a holder-lug' projectingf beyond-its end and H adaptedrto ha've sliding movements inthe. firstifnarned box' to dispose its holder-lug at f selected distances therefrom with its aper jturesjdisposed. in alignment With the aperfl tureso'f sai'd f fii' st na'nied box, thetop and sides of the" firstnamed box having, slots iorinedpthereinj in. alignment With its s aperturese- In testimony whereof, I have affixed only a s g a u e T15 FREDA. BAllLEY, 

